Wheel puller



WHEEL FULLER Filed June 26 1922 R. B. HAINSWORTH June 9; g.

mls. anda z'd @ya Patented June 9, 1925.

PATENT OFFICE.

ROBERT IB. HAINSWORTH, OF MAYWOOD, ILLINOIS.

WHEEL PULLR.

Application led June 26', 1922. Serial No.l 570,774.

VTo all fwwm't may concern:

Be it known-that I, ROBERT B. HAINS- woR'rH,.a citizen of the United States, re-

siding at Maywood, in the county of Cook and the State of Illinois, have invented certainnew and useful Improvements in Wheel Pullers, of which the following is a specitica tion, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention' is to provide an improved tool of the type known as a wheel puller designed for-withdrawing a wheel from a shaft or. axle withwhich f it is engaged by a taper or drive fit. It

:consists of certain featuresl and elements of construction' in combination, as hereinafter described and shown in the drawings and as indicated by the claims.

In the drawings Figure l is aside elevation otl a wheel puller embodying this invention with a considerable portion broken awayto show the interior constructionvin section at a diametral plane. i v

Figure 2 is an endelevation of the device shown in Figure 1.

Figure 3 is a perspective view of the compressible clamp ring of the wheel Duller.

Figure 4 is a view similar to *igure 1 showing a modified construction.

.In the drawings Figure 1 shows in dotted outline a wheelhub, A, .externally threaded `at B and secured to a tapered shaft or axle,

C,having a reduced end portion, D, which extends beyond the end of the hub. This is a common form of construction for the driving wheels and axles of automobiles, and it may be understood that the threads, B, are relatively fine threads provided primarily to receive a light ornamental cap or cover to enclose the reduced end, D, of the axle, C, said reduced portion ofthe axle bcing threaded for locking the axle in place by means of a nut (not shown), bearing against the end of the hub. The turning effort of the axle, C, is usually transmitted to the hub through a key, not shown. When it is desired to remove the wheel from Vthe axle, it is necessary to exert considerable pressure against the reduced end, D, and to grip the hub,A` in some manner by a device against which such. pressure may react. The present invention aims to accomplish this result in a convenient and efficient manner.

The tool consists of an annular' shell, 1, internally threaded at 2 for connection with a head or central spider, 3, whose hub portion, 4, is threaded to receive the jack screw, 5, by which the pressure is to be exerted against the end portion, D, ofthe axle, C. Within the annular shell, 1, there is carried a compressible clamping ring, 6, whichis internally threaded to fit the tine threads at B, on the hub of the wheel. The outer end of the shell, 1, has an overhanging lip which is inclined or beveled at 7 to engage the beveled end portion, 8, of the ring, 6; and the ring, 6, is rendered compressible by splitting it,-that is, by milling or sawing it apart at one side, thus ormin a. slot extending transversely of the threads as indicated at 9. y

At its inner end the ring,'6, is provided with lugs, 10, which engage slots or notches, 11, formed in the end of the head member, 3, yso that when the ring, 6, is inserted in the shell, 1, with its beveled end, 8, in contact with the beveled shoulder, 7, of the shell and with the head, 3, screwed into the threads, 2, into contact with the ring,'6, lthe said ring, 6, is locked to the part, 3, for rotation therewith. The whole assembly may then be conveniently screwed onto the threaded portion, B, kof the wheel hub, the

threads of the ring, 6, engaging those of the hub. Then as the jack screw, 5, is v screwed in against the end portion, D, o rfv theaxle, the shell, 1, will tend to beishifted axially upon the ring, 6, and by such G, and the more strongly will it be forcedy l to grip the threads, B, thus insuring an effective hold upon thehub against which the jack screw may act for forcing the tapered axle, C, out of the hub, A.

' Preferably the end ot the jack screw is squared at 12. to receive a wrench and may also be provided with a transverse hole so that a rod or bar. 13, may be inserted in lieu of the kwrench when' convenient. As shown in Fig. Q, the slots, 1l. in the head portion, 3, are formed in radial ribs or spokes, 14, and the intermediate portion of the head is cored out at 15 for lightening the constructiont llO Y Figure 4 shows an arrangement for utilizing the same tool on a-smaller sized hub, E, havin a threaded portion, F, and a tapered faxle, with its reduced end portion shown at H. The dotted out-lines include the parts, 1 and 3, andl the jack screw, 5, but in place of the compressible threaded ring, 6, an adapter ring, 16, is inserted in the annular shell, 1, with the beveled lip :or shoulder, 17, of the shell, 1, engaging the beveled end, 18, of the adapter ring. This ring is not threaded, but is internally smooth: and fits .over a threaded ring, 19, adaptedV to screw into the threaded part, F, of the hub, E. Said ring, 19, is provided with lugs, 20, to engage the slots, 11, of the head, 3, and at its forward end is beveled at 21, for contact Awith; the beveled or tapered shoulder, 22, of the adapter ring, 16. rllhe adapter ring is split at 23 and the threaded ring, 19, is split at 24, so that as the jack screw, 5, is entered against Ythe end portion, H, of the axle, the shell, 1, is shifted slightly in axial direction upon the adapter ring, 16, and compresses it to engagement of the beveled surfaces, 17 and 18, while said adapter ring 16, transmits this compression tothe innerthreaded ring, 19, and further movement of the jack screw, 5, may cause some slight longitudinal shifting of the ring, 16,`upon the ring, 19, whereby the beveled surfaces, 21 and 22, will v act to further contract tlie'ring, `19, and thus forceits threads as deeply as possible into the threaded portion, il, of the hub, E. By virtue of the additional parts, 16 and 19, or

similar adapting parts of other dimensions,`

the tool shown 1n Figure 1 may be used on a considerable. range of hub sizes and its utility will be thus measurably increased.

I claim 1. A wheel puller comprising a compressible internally threaded member to lit upon a threaded wheel hub; a shell enclosing said member and having a threaded head with a jack screw centered therein to engage the end of an axle in the Wheel hub, said com- 'p'ressible ymember having an externally tapered part, and thel shell having an internally taperedpaitto co-operate therewith for compressing the threaded member upon application of longitudinal pressure Y by the jack screw, said shell and its head being separable to permit removal of the compiessible member therefrom.

2. A wheel puller comprising a compressible member internally threaded to tit upon a threaded wheel hub; a shell enclosing said member having a threaded head with a jack screw centered therein to engage the end of an axle in the wheel hub, said compressible member being a ring cut apart from end to end, externally beveled at one end to cooperate with an internally tapered part of the Shell so that application ot longitudinal pressure by the -'jack screw'rinay operateto the threaded wheelY hub, a shell enclosing -i said member having a headwwith a jack screw centered therein to engage the end of an axle in such hub, the compressible member having an externally tapered part and the Vshell havin -an internally tapered part to co-operate 'tierewitln said cf'jinpress'ible member being a split ring with lugs extending from its inner end engaging notches` in the head of the'shell. y

4. In the combination defined in claim 1, the shell and its head being screwed together with the compressible member disposed between the portion of the head which is screwed to the shell and the tapered partof said shell extending opposite said head.

5. A wheel puller comprising a compressible member internally threaded to tit upon a threaded wheel hub, a shell enclosing said member having a head with va jack screw centered therein to engage theend of an axle in such wheel hub, said compressible member having an externally tapered part,

and the shell including a compressible.l

adapter encompassing said compressible .f

threaded member, said adapter having an' internally "tapered part' to co-operate with the tapered part of the compressibie mem ber and having an externally tapered pormensions enclosing said member with a jackv screw centered therein to engage the end of an axle in such Wheel hub, the compressiblel member having an externally tapered part,

and the shell including an adapter ring se-` cuied therein and formed with an internally tapered part to co-operate with the `external taper of the compressible member forcemp'ressing the latter upon application of 1ongitudinal pressure by the jackscrew.

7. A wheel puller. comprising a comp-ressible internally threaded member to tit upon a threaded wheel hub, a shell encompassing said member and =a threaded head for Ithe shell separably connected thereto to permit removal of the compiessible member therefrom, together with a jack screw centered in the head ot the shell to engage the Vend of an axle in the wheel hub for exerting pressure thereon, and means whereby the reaction of such pressure at the jack screw is transferred to the compressiblemember for increasing its grip upon the threaded hub.

In testimony whereof, I have hereunto set my handthis 21st day of June, 1922.

ROBERT B. HAINSNORTH. 

